1372520 has 16 divisors (see below), whose sum is σ = 3088260. Its totient is φ = 548992.

The previous prime is 1372493. The next prime is 1372531. The reversal of 1372520 is 252731.

It can be written as a sum of positive squares in 2 ways, for example, as 1331716 + 40804 = 1154^2 + 202^2 .

It is a super-2 number, since 2×1372520² = 3767622300800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1372492 and 1372501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17117 + ... + 17196.

2^1372520 is an apocalyptic number.

1372520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1372520 is an abundant number, since it is smaller than the sum of its proper divisors (1715740).

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

1372520 is a wasteful number, since it uses less digits than its factorization.

1372520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34324 (or 34320 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 1372520 is about 1171.5459871469. The cubic root of 1372520 is about 111.1321101052.

The spelling of 1372520 in words is "one million, three hundred seventy-two thousand, five hundred twenty".