268402620 has 24 divisors (see below), whose sum is σ = 751527504. Its totient is φ = 71574016.

The previous prime is 268402597. The next prime is 268402621. The reversal of 268402620 is 26204862.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268402621) 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, 2236629 + ... + 2236748.

It is an arithmetic number, because the mean of its divisors is an integer number (31313646).

Almost surely, 2^268402620 is an apocalyptic number.

268402620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268402620 is an abundant number, since it is smaller than the sum of its proper divisors (483124884).

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

268402620 is a wasteful number, since it uses less digits than its factorization.

268402620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4473389 (or 4473387 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 268402620 is about 16382.9978941584. The cubic root of 268402620 is about 645.0532736479.

The spelling of 268402620 in words is "two hundred sixty-eight million, four hundred two thousand, six hundred twenty".