155193280 has 56 divisors (see below), whose sum is σ = 403158960. Its totient is φ = 56432640.

The previous prime is 155193277. The next prime is 155193287. The reversal of 155193280 is 82391551.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155193287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18525 + ... + 25564.

Almost surely, 2^155193280 is an apocalyptic number.

155193280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155193280 is an abundant number, since it is smaller than the sum of its proper divisors (247965680).

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

155193280 is a wasteful number, since it uses less digits than its factorization.

155193280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44117 (or 44107 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 155193280 is about 12457.6594912528. The cubic root of 155193280 is about 537.3917200308.

The spelling of 155193280 in words is "one hundred fifty-five million, one hundred ninety-three thousand, two hundred eighty".