154699452 has 18 divisors (see below), whose sum is σ = 391045928. Its totient is φ = 51566472.

The previous prime is 154699429. The next prime is 154699469. The reversal of 154699452 is 254996451.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 154699398 and 154699407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2148568 + ... + 2148639.

Almost surely, 2^154699452 is an apocalyptic number.

154699452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

154699452 is an abundant number, since it is smaller than the sum of its proper divisors (236346476).

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

154699452 is a wasteful number, since it uses less digits than its factorization.

154699452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4297217 (or 4297212 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 154699452 is about 12437.8234430305. The cubic root of 154699452 is about 536.8211174518.

The spelling of 154699452 in words is "one hundred fifty-four million, six hundred ninety-nine thousand, four hundred fifty-two".