154879872 has 128 divisors (see below), whose sum is σ = 474455040. Its totient is φ = 43849728.

The previous prime is 154879871. The next prime is 154879873. The reversal of 154879872 is 278978451.

It is an interprime number because it is at equal distance from previous prime (154879871) and next prime (154879873).

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154879871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421833 + ... + 422199.

It is an arithmetic number, because the mean of its divisors is an integer number (3706680).

Almost surely, 2^154879872 is an apocalyptic number.

154879872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154879872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237227520).

154879872 is an abundant number, since it is smaller than the sum of its proper divisors (319575168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154879872 is a wasteful number, since it uses less digits than its factorization.

154879872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 536 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 51.

The square root of 154879872 is about 12445.0742062874. The cubic root of 154879872 is about 537.0297276248.

The spelling of 154879872 in words is "one hundred fifty-four million, eight hundred seventy-nine thousand, eight hundred seventy-two".