1270400998 has 16 divisors (see below), whose sum is σ = 1994952960. Its totient is φ = 605597256.

The previous prime is 1270400993. The next prime is 1270401037. The reversal of 1270400998 is 8990040721.

It is a super-2 number, since 2×1270400998² = 3227837391438792008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1270400998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1270400993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30858 + ... + 59101.

It is an arithmetic number, because the mean of its divisors is an integer number (124684560).

Almost surely, 2^1270400998 is an apocalyptic number.

1270400998 is a deficient number, since it is larger than the sum of its proper divisors (724551962).

1270400998 is a wasteful number, since it uses less digits than its factorization.

1270400998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90291.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 1270400998 is about 35642.6850559831. The cubic root of 1270400998 is about 1083.0460981661.

The spelling of 1270400998 in words is "one billion, two hundred seventy million, four hundred thousand, nine hundred ninety-eight".