154389540 has 48 divisors (see below), whose sum is σ = 432919872. Its totient is φ = 41110656.

The previous prime is 154389539. The next prime is 154389553. The reversal of 154389540 is 45983451.

It is a super-2 number, since 2×154389540² = 47672260122823200, which contains 22 as substring.

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, 53002 + ... + 55838.

It is an arithmetic number, because the mean of its divisors is an integer number (9019164).

Almost surely, 2^154389540 is an apocalyptic number.

154389540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154389540 is an abundant number, since it is smaller than the sum of its proper divisors (278530332).

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

154389540 is a wasteful number, since it uses less digits than its factorization.

154389540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756 (or 3754 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 154389540 is about 12425.3587473360. The cubic root of 154389540 is about 536.4624035644.

The spelling of 154389540 in words is "one hundred fifty-four million, three hundred eighty-nine thousand, five hundred forty".