1457691420 has 24 divisors (see below), whose sum is σ = 4081536144. Its totient is φ = 388717696.

The previous prime is 1457691413. The next prime is 1457691437. The reversal of 1457691420 is 241967541.

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, 12147369 + ... + 12147488.

It is an arithmetic number, because the mean of its divisors is an integer number (170064006).

Almost surely, 2^1457691420 is an apocalyptic number.

1457691420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1457691420 is an abundant number, since it is smaller than the sum of its proper divisors (2623844724).

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

1457691420 is a wasteful number, since it uses less digits than its factorization.

1457691420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24294869 (or 24294867 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 1457691420 is about 38179.7252478328. The cubic root of 1457691420 is about 1133.8489420516.

The spelling of 1457691420 in words is "one billion, four hundred fifty-seven million, six hundred ninety-one thousand, four hundred twenty".