1226840652 has 36 divisors (see below), whose sum is σ = 3106412400. Its totient is φ = 408256992.

The previous prime is 1226840633. The next prime is 1226840669. The reversal of 1226840652 is 2560486221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6883 + ... + 50010.

Almost surely, 2^1226840652 is an apocalyptic number.

1226840652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1226840652 is an abundant number, since it is smaller than the sum of its proper divisors (1879571748).

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

1226840652 is a wasteful number, since it uses less digits than its factorization.

1226840652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57502 (or 57497 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 1226840652 is about 35026.2851584349. The cubic root of 1226840652 is about 1070.5231238283.

The spelling of 1226840652 in words is "one billion, two hundred twenty-six million, eight hundred forty thousand, six hundred fifty-two".