1357661928 has 128 divisors (see below), whose sum is σ = 3993292800. Its totient is φ = 376614144.

The previous prime is 1357661927. The next prime is 1357661947. The reversal of 1357661928 is 8291667531.

It is not an unprimeable number, because it can be changed into a prime (1357661923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1096926 + ... + 1098162.

It is an arithmetic number, because the mean of its divisors is an integer number (31197600).

Almost surely, 2^1357661928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1357661928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1996646400).

1357661928 is an abundant number, since it is smaller than the sum of its proper divisors (2635630872).

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

1357661928 is a wasteful number, since it uses less digits than its factorization.

1357661928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439 (or 1435 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The square root of 1357661928 is about 36846.4642537110. The cubic root of 1357661928 is about 1107.2963793284.

The spelling of 1357661928 in words is "one billion, three hundred fifty-seven million, six hundred sixty-one thousand, nine hundred twenty-eight".