154228392 has 24 divisors (see below), whose sum is σ = 417702090. Its totient is φ = 51409440.

The previous prime is 154228391. The next prime is 154228397. The reversal of 154228392 is 293822451.

It is a happy number.

154228392 is a `hidden beast` number, since 1 + 542 + 28 + 3 + 92 = 666.

154228392 is digitally balanced in base 3, 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., 148206276 + 6022116 = 12174^2 + 2454^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (154228391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1070959 + ... + 1071102.

Almost surely, 2^154228392 is an apocalyptic number.

154228392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

154228392 is an abundant number, since it is smaller than the sum of its proper divisors (263473698).

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

154228392 is a wasteful number, since it uses less digits than its factorization.

154228392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142073 (or 2142066 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 154228392 is about 12418.8724125824. The cubic root of 154228392 is about 536.2756898381.

The spelling of 154228392 in words is "one hundred fifty-four million, two hundred twenty-eight thousand, three hundred ninety-two".