154491712 has 14 divisors (see below), whose sum is σ = 306569618. Its totient is φ = 77245824.

The previous prime is 154491709. The next prime is 154491719. The reversal of 154491712 is 217194451.

It can be written as a sum of positive squares in only one way, i.e., 145347136 + 9144576 = 12056^2 + 3024^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154491719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1206903 + ... + 1207030.

Almost surely, 2^154491712 is an apocalyptic number.

It is an amenable number.

154491712 is a deficient number, since it is larger than the sum of its proper divisors (152077906).

154491712 is an equidigital number, since it uses as much as digits as its factorization.

154491712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413945 (or 2413935 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 154491712 is about 12429.4694979311. The cubic root of 154491712 is about 536.5807176032.

It can be divided in two parts, 15449 and 1712, that added together give a square (17161 = 131²).

The spelling of 154491712 in words is "one hundred fifty-four million, four hundred ninety-one thousand, seven hundred twelve".