1398634572 has 12 divisors (see below), whose sum is σ = 3263480696. Its totient is φ = 466211520.

The previous prime is 1398634571. The next prime is 1398634597. The reversal of 1398634572 is 2754368931.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×1398634572³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1398634571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58276429 + ... + 58276452.

Almost surely, 2^1398634572 is an apocalyptic number.

1398634572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1398634572 is an abundant number, since it is smaller than the sum of its proper divisors (1864846124).

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

1398634572 is a wasteful number, since it uses less digits than its factorization.

1398634572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116552888 (or 116552886 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 1398634572 is about 37398.3231174875. The cubic root of 1398634572 is about 1118.3251358758.

The spelling of 1398634572 in words is "one billion, three hundred ninety-eight million, six hundred thirty-four thousand, five hundred seventy-two".