1521730074 has 32 divisors (see below), whose sum is σ = 3092785920. Its totient is φ = 499067712.

The previous prime is 1521730069. The next prime is 1521730087. The reversal of 1521730074 is 4700371251.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133404 + ... + 144360.

It is an arithmetic number, because the mean of its divisors is an integer number (96649560).

Almost surely, 2^1521730074 is an apocalyptic number.

1521730074 is an abundant number, since it is smaller than the sum of its proper divisors (1571055846).

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

1521730074 is a wasteful number, since it uses less digits than its factorization.

1521730074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11334.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 1521730074 is about 39009.3588001649. The cubic root of 1521730074 is about 1150.2154792192.

The spelling of 1521730074 in words is "one billion, five hundred twenty-one million, seven hundred thirty thousand, seventy-four".