2537940 has 24 divisors (see below), whose sum is σ = 7106400. Its totient is φ = 676768.

The previous prime is 2537923. The next prime is 2537959. The reversal of 2537940 is 497352.

It is a super-2 number, since 2×2537940² = 12882278887200, which contains 22 as substring.

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 = 2537898 and 2537907.

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, 21090 + ... + 21209.

It is an arithmetic number, because the mean of its divisors is an integer number (296100).

2^2537940 is an apocalyptic number.

2537940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2537940 is an abundant number, since it is smaller than the sum of its proper divisors (4568460).

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

2537940 is a wasteful number, since it uses less digits than its factorization.

2537940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42311 (or 42309 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 2537940 is about 1593.0913344815. The cubic root of 2537940 is about 136.4040034027.

The spelling of 2537940 in words is "two million, five hundred thirty-seven thousand, nine hundred forty".