155422470 has 64 divisors (see below), whose sum is σ = 448750080. Its totient is φ = 33654528.

The previous prime is 155422457. The next prime is 155422471. The reversal of 155422470 is 74224551.

It is a super-2 number, since 2×155422470² = 48312288361801800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155422471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15487 + ... + 23466.

It is an arithmetic number, because the mean of its divisors is an integer number (7011720).

Almost surely, 2^155422470 is an apocalyptic number.

155422470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155422470 is an abundant number, since it is smaller than the sum of its proper divisors (293327610).

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

155422470 is a wasteful number, since it uses less digits than its factorization.

155422470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38989.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 155422470 is about 12466.8548559771. The cubic root of 155422470 is about 537.6561305945.

The spelling of 155422470 in words is "one hundred fifty-five million, four hundred twenty-two thousand, four hundred seventy".