40997280 has 48 divisors (see below), whose sum is σ = 129142944. Its totient is φ = 10932480.

The previous prime is 40997279. The next prime is 40997291. The reversal of 40997280 is 8279904.

It is a tau number, because it is divible by the number of its divisors (48).

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, 42226 + ... + 43185.

It is an arithmetic number, because the mean of its divisors is an integer number (2690478).

Almost surely, 2^40997280 is an apocalyptic number.

40997280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40997280 is an abundant number, since it is smaller than the sum of its proper divisors (88145664).

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

40997280 is a wasteful number, since it uses less digits than its factorization.

40997280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85429 (or 85421 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 40997280 is about 6402.9118375939. The cubic root of 40997280 is about 344.8140985437.

The spelling of 40997280 in words is "forty million, nine hundred ninety-seven thousand, two hundred eighty".