1292929920 has 96 divisors (see below), whose sum is σ = 4464668520. Its totient is φ = 344779776.

The previous prime is 1292929919. The next prime is 1292929943. The reversal of 1292929920 is 299292921.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106474 + ... + 117993.

Almost surely, 2^1292929920 is an apocalyptic number.

1292929920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1292929920 is an abundant number, since it is smaller than the sum of its proper divisors (3171738600).

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

1292929920 is a wasteful number, since it uses less digits than its factorization.

1292929920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224492 (or 224477 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 1292929920 is about 35957.3347176901. The cubic root of 1292929920 is about 1089.4107636457.

It can be divided in two parts, 12929 and 29920, that added together give a square (42849 = 207²).

The spelling of 1292929920 in words is "one billion, two hundred ninety-two million, nine hundred twenty-nine thousand, nine hundred twenty".