1521628272 has 60 divisors (see below), whose sum is σ = 4357497144. Its totient is φ = 495411840.

The previous prime is 1521628271. The next prime is 1521628301. The reversal of 1521628272 is 2728261251.

It is a happy number.

1521628272 is a `hidden beast` number, since 1 + 5 + 2 + 1 + 628 + 27 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521628271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116679 + ... + 129062.

Almost surely, 2^1521628272 is an apocalyptic number.

1521628272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1521628272 is an abundant number, since it is smaller than the sum of its proper divisors (2835868872).

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

1521628272 is a wasteful number, since it uses less digits than its factorization.

1521628272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245798 (or 245789 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 1521628272 is about 39008.0539376165. The cubic root of 1521628272 is about 1150.1898292809.

The spelling of 1521628272 in words is "one billion, five hundred twenty-one million, six hundred twenty-eight thousand, two hundred seventy-two".