155078620 has 12 divisors (see below), whose sum is σ = 325665144. Its totient is φ = 62031440.

The previous prime is 155078603. The next prime is 155078633. The reversal of 155078620 is 26870551.

It is a super-2 number, since 2×155078620² = 48098756762208800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3876946 + ... + 3876985.

It is an arithmetic number, because the mean of its divisors is an integer number (27138762).

Almost surely, 2^155078620 is an apocalyptic number.

155078620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155078620 is an abundant number, since it is smaller than the sum of its proper divisors (170586524).

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

155078620 is a wasteful number, since it uses less digits than its factorization.

155078620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7753940 (or 7753938 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 155078620 is about 12453.0566528865. The cubic root of 155078620 is about 537.2593420576.

The spelling of 155078620 in words is "one hundred fifty-five million, seventy-eight thousand, six hundred twenty".