154023940 has 24 divisors (see below), whose sum is σ = 369657792. Its totient is φ = 52808160.

The previous prime is 154023923. The next prime is 154023943. The reversal of 154023940 is 49320451.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 154023899 and 154023908.

It is not an unprimeable number, because it can be changed into a prime (154023943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549946 + ... + 550225.

It is an arithmetic number, because the mean of its divisors is an integer number (15402408).

Almost surely, 2^154023940 is an apocalyptic number.

154023940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154023940 is an abundant number, since it is smaller than the sum of its proper divisors (215633852).

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

154023940 is a wasteful number, since it uses less digits than its factorization.

154023940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100187 (or 1100185 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 154023940 is about 12410.6381785950. The cubic root of 154023940 is about 536.0386147646.

The spelling of 154023940 in words is "one hundred fifty-four million, twenty-three thousand, nine hundred forty".