154009920 has 112 divisors (see below), whose sum is σ = 492971328. Its totient is φ = 40734720.

The previous prime is 154009913. The next prime is 154009949. The reversal of 154009920 is 29900451.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130935 + ... + 132105.

Almost surely, 2^154009920 is an apocalyptic number.

154009920 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 154009920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246485664).

154009920 is an abundant number, since it is smaller than the sum of its proper divisors (338961408).

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

154009920 is a wasteful number, since it uses less digits than its factorization.

154009920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328 (or 1318 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 154009920 is about 12410.0733277447. The cubic root of 154009920 is about 536.0223499999.

The spelling of 154009920 in words is "one hundred fifty-four million, nine thousand, nine hundred twenty".