154661628 has 48 divisors (see below), whose sum is σ = 404337024. Its totient is φ = 45599040.

The previous prime is 154661567. The next prime is 154661651. The reversal of 154661628 is 826166451.

It is a happy number.

It is a super-2 number, since 2×154661628² = 47840438351220768, which contains 22 as substring.

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, 10950 + ... + 20717.

It is an arithmetic number, because the mean of its divisors is an integer number (8423688).

Almost surely, 2^154661628 is an apocalyptic number.

It is an amenable number.

154661628 is an abundant number, since it is smaller than the sum of its proper divisors (249675396).

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

154661628 is a wasteful number, since it uses less digits than its factorization.

154661628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31722 (or 31720 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 154661628 is about 12436.3028268051. The cubic root of 154661628 is about 536.7773629831. Note that the first 3 decimals are identical.

The spelling of 154661628 in words is "one hundred fifty-four million, six hundred sixty-one thousand, six hundred twenty-eight".