1157623420 has 24 divisors (see below), whose sum is σ = 2449572048. Its totient is φ = 459513600.

The previous prime is 1157623391. The next prime is 1157623433. The reversal of 1157623420 is 243267511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218301 + ... + 223540.

It is an arithmetic number, because the mean of its divisors is an integer number (102065502).

Almost surely, 2^1157623420 is an apocalyptic number.

1157623420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157623420 is an abundant number, since it is smaller than the sum of its proper divisors (1291948628).

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

1157623420 is a wasteful number, since it uses less digits than its factorization.

1157623420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441981 (or 441979 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1157623420 is about 34023.8654476531. The cubic root of 1157623420 is about 1049.9995222976. Note that the first 3 decimals are identical.

The spelling of 1157623420 in words is "one billion, one hundred fifty-seven million, six hundred twenty-three thousand, four hundred twenty".