154891432 has 8 divisors (see below), whose sum is σ = 290421450. Its totient is φ = 77445712.

The previous prime is 154891411. The next prime is 154891441. The reversal of 154891432 is 234198451.

154891432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 144817156 + 10074276 = 12034^2 + 3174^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 154891391 and 154891400.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9680707 + ... + 9680722.

Almost surely, 2^154891432 is an apocalyptic number.

It is an amenable number.

154891432 is a deficient number, since it is larger than the sum of its proper divisors (135530018).

154891432 is a wasteful number, since it uses less digits than its factorization.

154891432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19361435 (or 19361431 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 154891432 is about 12445.5386384037. The cubic root of 154891432 is about 537.0430883219.

The spelling of 154891432 in words is "one hundred fifty-four million, eight hundred ninety-one thousand, four hundred thirty-two".