155492400 has 240 divisors, whose sum is σ = 577891584. Its totient is φ = 35005440.

The previous prime is 155492357. The next prime is 155492417. The reversal of 155492400 is 4294551.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 898714 + ... + 898886.

Almost surely, 2^155492400 is an apocalyptic number.

155492400 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 155492400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288945792).

155492400 is an abundant number, since it is smaller than the sum of its proper divisors (422399184).

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

155492400 is a wasteful number, since it uses less digits than its factorization.

155492400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 155492400 is about 12469.6591773793. The cubic root of 155492400 is about 537.7367552637.

The spelling of 155492400 in words is "one hundred fifty-five million, four hundred ninety-two thousand, four hundred".