40745280 has 56 divisors (see below), whose sum is σ = 129369312. Its totient is φ = 10865152.

The previous prime is 40745269. The next prime is 40745303. The reversal of 40745280 is 8254704.

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

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, 20262 + ... + 22181.

Almost surely, 2^40745280 is an apocalyptic number.

40745280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40745280 is an abundant number, since it is smaller than the sum of its proper divisors (88624032).

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

40745280 is a wasteful number, since it uses less digits than its factorization.

40745280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42463 (or 42453 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 40745280 is about 6383.2029577634. The cubic root of 40745280 is about 344.1061507635.

Adding to 40745280 its reverse (8254704), we get a palindrome (48999984).

The spelling of 40745280 in words is "forty million, seven hundred forty-five thousand, two hundred eighty".