148906640 has 80 divisors (see below), whose sum is σ = 361643520. Its totient is φ = 56954880.

The previous prime is 148906633. The next prime is 148906643. The reversal of 148906640 is 46609841.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 148906594 and 148906603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148906643) 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, 240251 + ... + 240869.

It is an arithmetic number, because the mean of its divisors is an integer number (4520544).

Almost surely, 2^148906640 is an apocalyptic number.

148906640 is a gapful number since it is divisible by the number (10) 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 148906640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180821760).

148906640 is an abundant number, since it is smaller than the sum of its proper divisors (212736880).

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

148906640 is a wasteful number, since it uses less digits than its factorization.

148906640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 148906640 is about 12202.7308419058. The cubic root of 148906640 is about 530.0351703254.

The spelling of 148906640 in words is "one hundred forty-eight million, nine hundred six thousand, six hundred forty".