1302274656 has 72 divisors (see below), whose sum is σ = 3707023320. Its totient is φ = 433660416.

The previous prime is 1302274639. The next prime is 1302274657. The reversal of 1302274656 is 6564722031.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1302274656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302274657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 437140 + ... + 440108.

It is an arithmetic number, because the mean of its divisors is an integer number (51486435).

Almost surely, 2^1302274656 is an apocalyptic number.

1302274656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1302274656 is an abundant number, since it is smaller than the sum of its proper divisors (2404748664).

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

1302274656 is a wasteful number, since it uses less digits than its factorization.

1302274656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508 (or 4497 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 1302274656 is about 36087.0427716099. The cubic root of 1302274656 is about 1092.0290617391.

Adding to 1302274656 its reverse (6564722031), we get a palindrome (7866996687).

It can be divided in two parts, 13022 and 74656, that added together give a palindrome (87678).

The spelling of 1302274656 in words is "one billion, three hundred two million, two hundred seventy-four thousand, six hundred fifty-six".