253061940 has 24 divisors (see below), whose sum is σ = 708573600. Its totient is φ = 67483168.

The previous prime is 253061929. The next prime is 253061951. The reversal of 253061940 is 49160352.

It is an interprime number because it is at equal distance from previous prime (253061929) and next prime (253061951).

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

It is a junction number, because it is equal to n+sod(n) for n = 253061898 and 253061907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2108790 + ... + 2108909.

It is an arithmetic number, because the mean of its divisors is an integer number (29523900).

Almost surely, 2^253061940 is an apocalyptic number.

253061940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253061940 is an abundant number, since it is smaller than the sum of its proper divisors (455511660).

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

253061940 is a wasteful number, since it uses less digits than its factorization.

253061940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4217711 (or 4217709 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 253061940 is about 15907.9206686481. The cubic root of 253061940 is about 632.5219643776.

The spelling of 253061940 in words is "two hundred fifty-three million, sixty-one thousand, nine hundred forty".